TY - CHAP
T1 - Elastic-plastic behaviors of vertically aligned carbon nanotube arrays by large-displacement indentation test
AU - Lu, Y. Charles
AU - Joseph, Johnson
AU - Zhang, Qiuhong
AU - Du, Feng
AU - Dai, Liming
PY - 2014
Y1 - 2014
N2 - This chapter describes the large-displacement indentation test method for examining elastic-plastic behaviors of vertically aligned carbon nanotube arrays (VA-CNTs). The principle of this test is explained by using a cavity expansion model. The experiments have been performed on VA-CNTs synthesized by the chemical vapor deposition (CVD) method. Under a cylindrical, flat indenter, the VA-CNTs exhibit two distinct deformation stages: a short, elastic deformation at small displacement and a plateau-like, plastic deformation at large displacement. The critical indentation stress, a measure of yield stress or collapsing stress of the VA-CNT arrays, has been obtained. The deformation mechanism of the VA-CNTs at large displacement is revealed with scanning electronic microscope (SEM) images of the deformed VA-CNTs and finite element simulations.
AB - This chapter describes the large-displacement indentation test method for examining elastic-plastic behaviors of vertically aligned carbon nanotube arrays (VA-CNTs). The principle of this test is explained by using a cavity expansion model. The experiments have been performed on VA-CNTs synthesized by the chemical vapor deposition (CVD) method. Under a cylindrical, flat indenter, the VA-CNTs exhibit two distinct deformation stages: a short, elastic deformation at small displacement and a plateau-like, plastic deformation at large displacement. The critical indentation stress, a measure of yield stress or collapsing stress of the VA-CNT arrays, has been obtained. The deformation mechanism of the VA-CNTs at large displacement is revealed with scanning electronic microscope (SEM) images of the deformed VA-CNTs and finite element simulations.
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U2 - 10.1007/978-94-007-6919-9_16
DO - 10.1007/978-94-007-6919-9_16
M3 - Chapter
AN - SCOPUS:84958523629
SN - 9789400769182
T3 - Solid Mechanics and its Applications
SP - 323
EP - 339
BT - Nanomechanical Analysis Nanomechanical Analysis Materials
ER -